<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"> 
    <title>Bootstrap 实例 - 缩略图</title>
	<link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css">
	<script src="http://cdn.static.runoob.com/libs/jquery/2.1.1/jquery.min.js"></script>
	<script src="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
    <div class="row">
        <div class="col-sm-6 col-md-1">
            <a href="#" class="thumbnail">
                <img src="./../psb2.jpg" style="width:100px; height:100px;" >
            </a>
        </div>
        <div class="col-sm-6 col-md-3">
            <a href="#" class="thumbnail">
                <img src="./../psb2.jpg" style="width:100px; height:200px;" >
            </a>
        </div>
        <div class="col-sm-6 col-md-3">
            <a href="#" class="thumbnail">
                <img src="./../psb2.jpg" style="width:100px; height:200px;" >
            </a>
        </div>
        <div class="col-sm-6 col-md-3">
            <a href="#" class="thumbnail">
                <img src="./../psb2.jpg" style="width:100px; height:200px;" >
            </a>
        </div>
    </div>

</body>
</html>